Pão de Queijo — pronounced pow duh KAY-zhoo

1-2/3 C tapioca flour (available at Asian food stores)
1/4 C sunflower oil
generous pinch of salt
1 egg, beaten
1/3 C yogurt
1/2 to 3/4 C grated hard cheese, like parmesan

Preheat oven to 450 F. Combine oil and salt with 1/3 C water and bring to a boil. Pour over the tapioca and stir to make a crumbly dough. When it cools, stir in the yogurt, cheese, and egg. Drop spoonfuls onto an ungreased cookie sheet — you can make 12 large ones or 24 small ones. Turn the oven down to 350 and bake 25 to 30 minutes. Cool on a wire rack.